Information processing method, communication apparatus, and communication system

Abstract

An information processing method, a communication apparatus, and a communication system are provided. A core network control plane network element receives a tunnel establishment request from an application function entity, where the tunnel establishment request is used to request to establish a shared tunnel for transmitting data by a terminal device; the core network control plane network element determines a tunnel configuration policy corresponding to the tunnel establishment request; the core network control plane network element selects a session management network element based on the tunnel establishment request; and the core network control plane network element sends the tunnel configuration policy to the session management network element, where the tunnel configuration policy is used to indicate the session management network element to trigger establishment of the shared tunnel between an access network node and a user plane function network element.

What is claimed is: 
     
       1. An information processing method, comprising:
 receiving, by a core network control plane network element, a tunnel establishment request from an application function entity, wherein the tunnel establishment request is used to establish a shared tunnel for transmitting data by a terminal device; 
 determining, by the core network control plane network element, a tunnel configuration policy corresponding to the tunnel establishment request and a group configuration policy; 
 selecting, by the core network control plane network element, a session management network element from a plurality of session management network elements based on the tunnel establishment request and the group configuration policy; and 
 sending, by the core network control plane network element, the tunnel configuration policy to the session management network element selected by the core network control plane network element, wherein the tunnel configuration policy is used to indicate the session management network element selected by the core network control plane network element to trigger establishment of the shared tunnel between an access network node and a user plane function network element. 
 
     
     
       2. The method according to  claim 1 , wherein the receiving, by a the core network control plane network element, the tunnel establishment request from an the application function entity includes:
 receiving, by the core network control plane network element, the tunnel establishment request from a network exposure network element, wherein the network exposure network element receives the tunnel establishment request from the application function entity. 
 
     
     
       3. The method according to  claim 1 , wherein the determining, by the core network control plane network element, the tunnel configuration policy corresponding to the tunnel establishment request and the group configuration policy includes:
 obtaining, by the core network control plane network element, the group configuration policy corresponding to the terminal device; and 
 generating, by the core network control plane network element, the tunnel configuration policy based on the tunnel establishment request and the group configuration policy. 
 
     
     
       4. The method according to  claim 1 , wherein the tunnel establishment request includes at least one of the following: first group information corresponding to the terminal device, service information corresponding to the shared tunnel, quality of service information corresponding to the shared tunnel, or network area information corresponding to the shared tunnel. 
     
     
       5. The method according to  claim 1 , wherein the tunnel configuration policy includes at least one of the following: second group information corresponding to the terminal device, an identifier of the shared tunnel, quality of service information corresponding to the shared tunnel, and network area information corresponding to the shared tunnel. 
     
     
       6. An information processing method, comprising:
 receiving, by a session management network element, a tunnel configuration policy from a core network control plane network element; 
 selecting, by the session management network element, a user plane function network element based on the tunnel configuration policy and user plane function network element capability information, and sending, by the session management network element, first shared tunnel establishment information to the user plane function network element selected by the session management network element based on the tunnel configuration policy and the user plane function network element capability information; and 
 determining, by the session management network element, an access network node according to the tunnel configuration policy, and sending, by the session management network element, second shared tunnel establishment information to the access network node, wherein 
 the first shared tunnel establishment information and the second shared tunnel establishment information are used to establish a shared tunnel between the access network node and the user plane function network element. 
 
     
     
       7. The method according to  claim 6 , wherein the first shared tunnel establishment information includes at least one of the following: an identifier of the shared tunnel and quality of service information corresponding to the shared tunnel. 
     
     
       8. The method according to  claim 6 , wherein the second shared tunnel establishment information includes at least one of the following: an identifier of the shared tunnel, quality of service information corresponding to the shared tunnel, and an address of the user plane function network element. 
     
     
       9. The method according to  claim 6 , wherein after the sending, by the session management network element, the second shared tunnel establishment information to the access network node, the method further includes:
 receiving, by the session management network element, a tunnel establishment response from the access network node, wherein the tunnel establishment response includes an address of the access network node corresponding to the shared tunnel. 
 
     
     
       10. The method according to  claim 9 , wherein after the receiving, by the session management network element, the tunnel establishment response from the access network node, the method further includes:
 sending, by the session management network element, session configuration information to the user plane function network element, wherein the session configuration information includes at least one of the following: an identifier of the shared tunnel and the address of the access network node corresponding to the shared tunnel. 
 
     
     
       11. The method according to of  claim 6 , wherein after the sending, by the session management network element, the second shared tunnel establishment information to the access network node, the method further includes:
 receiving, by the session management network element, a session management context establishment request from an access and mobility management network element; 
 determining, by the session management network element based on the session management context establishment request, the shared tunnel established for a terminal device; 
 sending, by the session management network element, session establishment information to the user plane function network element, wherein the session establishment information includes an identifier of the terminal device and the identifier of the shared tunnel; and 
 sending, by the session management network element, shared tunnel configuration information to the access and mobility management network element, wherein the shared tunnel configuration information includes the identifier of the shared tunnel and an address of the user plane function network element. 
 
     
     
       12. An information processing method, comprising:
 receiving, by an access and mobility management network element, a session establishment request from a terminal device; 
 determining, by the access and mobility management network element based on the session establishment request and a group configuration policy, a session management network element, from a plurality of session management network elements, corresponding to the terminal device; and 
 sending, by the access and mobility management network element, a session management context establishment request to the determined session management network element. 
 
     
     
       13. The method according to  claim 12 , wherein the determining, by the access and mobility management network element based on the session establishment request and a group configuration policy, the session management network element corresponding to the terminal device includes:
 determining, by the access and mobility management network element, group information of the terminal device based on the session establishment request; 
 sending, by the access and mobility management network element, the group information of the terminal device to a session selection network element; and 
 receiving, by the access and mobility management network element, session management network element information determined by the session selection network element. 
 
     
     
       14. The method according to  claim 12 , wherein after the sending, by the access and mobility management network element, the session management context establishment request to the session management network element, the method further includes:
 receiving, by the access and mobility management network element, shared tunnel establishment information from the session management network element, wherein the shared tunnel establishment information includes an identifier of the shared tunnel and an address of a user plane function network element; and 
 sending, by the access and mobility management network element, the shared tunnel establishment information to an access network node. 
 
     
     
       15. A communication apparatus, comprising:
 at least one processor; and 
 a non-transitory computer-readable storage medium coupled to the at least one processor and storing one or more instructions, in response to being executed by the at least one processor, cause the processor to perform operations including:
 receiving a tunnel establishment request from an application function entity, wherein the tunnel establishment request is used to request establishment of a shared tunnel for transmitting data by a terminal device; 
 determining a tunnel configuration policy corresponding to the tunnel establishment request and a group configuration policy; 
 selecting a session management network element from a plurality of session management network elements based on the tunnel establishment request and the group configuration policy; and 
 sending the tunnel configuration policy to the session management network element, wherein the tunnel configuration policy triggers the session management network element selected from the plurality of session management network elements to establish the shared tunnel between an access network node and a user plane function network element.